How To Fix USMD1596 - Data model &1, relationship &2: Value &3 is not valid as a from-field

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 596

• Message text: Data model &1, relationship &2: Value &3 is not valid as a from-field

What causes this issue?

Only the following attributes can be used as a from-field in foreign key
relationships:
Direct key fields (if entered as key fields in attribute maintenance)
From-entity types (provided a data element is assigned)
Resolved key fields from relationships with the type <LS>leading</>

System Response

The data model cannot be saved or activated.

How to fix this error?

Use search help for the from-field in the <LS>Fields of Foreign Key
Relationships</> view in Customizing activity <DS:SIMG.FMDM_USMD001>Edit
Data Model</>. This lists the values that are valid.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message USMD1596 - Data model &1, relationship &2: Value &3 is not valid as a from-field ?

  The SAP error message USMD1596 typically occurs in the context of SAP Master Data Governance (MDG) when there is an issue with the data model configuration, specifically related to relationships between entities. The error message indicates that a specified value is not valid for a "from-field" in a relationship defined in the data model.
  Cause:
  
  Invalid Field Value: The value specified for the "from-field" in the relationship does not match any of the valid values defined in the data model.
  Data Model Configuration Issues: There may be a misconfiguration in the data model, such as incorrect relationships or missing fields.
  Inconsistent Data: The data being processed may not conform to the expected structure or constraints defined in the data model.
  Field Type Mismatch: The data type of the value being used may not match the expected data type for the "from-field".
  
  Solution:
  
  
  Check Data Model Configuration:
  
  Review the data model configuration in the SAP MDG system to ensure that the relationships are correctly defined.
  Verify that the "from-field" and "to-field" are correctly set up and that the relationship is valid.
  
  
  
  Validate Field Values:
  
  Ensure that the value being used for the "from-field" is valid and exists in the corresponding master data.
  Check for any typos or formatting issues in the value being provided.
  
  
  
  Review Data Consistency:
  
  Ensure that the data being processed is consistent with the definitions in the data model.
  If necessary, clean up the data to remove any inconsistencies.
  
  
  
  Check Field Types:
  
  Verify that the data type of the value being used matches the expected data type for the "from-field".
  If there is a mismatch, convert the value to the appropriate type.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on the data model and relationships in your version of SAP MDG.
  
  
  
  Debugging:
  
  If the issue persists, consider enabling debugging or logging to get more detailed information about the error and the context in which it occurs.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  Training and Documentation: Review training materials or documentation related to SAP MDG and data modeling to better understand how to configure and troubleshoot data models.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.